Knife



FIG. 1 is a front view in elevation of the ornamental design of a knife;

FIG. 2 is a view in elevation of the right side of the knife shown inFIG. 1;

FIG. 3 is a rear view in elevation of the knife shown in FIG. 1;

FIG. 4 is a view in elevation of the left side of the knife shown inFIG. 1;

FIG. 5 is a top plan view of the knife shown in FIG. 1;

FIG. 6 is a bottom plan view of the knife shown in FIG. 1; and,

FIG. 7 is a isometric view of the knife shown in FIG. 1.

The ornamental design for a knife, as shown and described.